Weather in Brussels in September
The weather is near-perfect with ideal temperatures and minimal rain. Recommended month to visit.
Climate Overview
September is an excellent time to visit Brussels. Brussels has a Cool climate with average yearly highs of 21°C, lows of 12°C, and approximately 9 rainy days per month.
21°C
12°C
9days
12.7h
Is September a good time to visit Brussels?
The weather is near-perfect with ideal temperatures and minimal rain.
Daylight
7:18 AM
7:59 PM
Weather by Month
| Month | High | Low | Rainy days | Condition |
|---|---|---|---|---|
| January | 8°C | 3°C | 9 | Good |
| February | 10°C | 4°C | 19 | Wet |
| March | 11°C | 3°C | 11 | Good |
| April | 18°C | 6°C | 4 | Good |
| May | 19°C | 8°C | 4 | Excellent (best) |
| June | 22°C | 13°C | 11 | Excellent (best) |
| July | 22°C | 13°C | 12 | Excellent (best) |
| August | 26°C | 16°C | 12 | Excellent (best) |
| September | 21°C | 12°C | 9 | Excellent (best) |
| October | 14°C | 9°C | 19 | Wet |
| November | 12°C | 6°C | 9 | Good |
| December | 8°C | 3°C | 13 | Wet |
Weather data: Open-Meteo Archive (2020-2025) • Open-Meteo.com (CC BY 4.0) • Historical avg. 2020–2025
What to Pack for September
Layers, a light jacket, comfortable walking shoes, and an umbrella.
Planning a trip to Brussels?
Common Questions
Is September a good time to visit Brussels? +
September is typically Excellent for visiting Brussels, with average highs of 21°C and around 9 rainy days.
What should I pack for Brussels in September? +
With highs of 21°C and lows of 12°C in {month}, we recommend: Layers, a light jacket, comfortable walking shoes, and an umbrella.
Does it rain a lot in Brussels in September? +
Brussels typically sees around 9 rainy days in September.
How many hours of daylight are there in Brussels in September? +
In September, Brussels gets approximately 12.7 hours of daylight per day.
Is September peak season in Brussels? +
Yes, September is peak season in Brussels. Expect higher prices and more crowds, but also the best weather.
What is the best month to visit Brussels? +
The best months to visit Brussels are May, June, July, August, September, when the weather is optimal for sightseeing.
More Brussels Guides
Best Time to Visit
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Things to Do
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Itineraries
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Overview
Complete travel guide for Brussels: top things to do, itineraries, and typical costs.